include/Photo.php

   1 <?php
   2 /**
   3  * @file include/Photo.php
   4  * @brief This file contains the Photo class for image processing
   5  */
   6
   7 require_once("include/photos.php");
   8
   9 class Photo {
  10
  11         private $image;
  12
  13         /*
  14          * Put back gd stuff, not everybody have Imagick
  15          */
  16         private $imagick;
  17         private $width;
  18         private $height;
  19         private $valid;
  20         private $type;
  21         private $types;
  22
  23         /**
  24          * @brief supported mimetypes and corresponding file extensions
  25          */
  26         static function supportedTypes() {
  27                 if (class_exists('Imagick')) {
  28
  29                         // Imagick::queryFormats won't help us a lot there...
  30                         // At least, not yet, other parts of friendica uses this array
  31                         $t = array(
  32                                 'image/jpeg' => 'jpg',
  33                                 'image/png' => 'png',
  34                                 'image/gif' => 'gif'
  35                         );
  36                 } else {
  37                         $t = array();
  38                         $t['image/jpeg'] ='jpg';
  39                         if (imagetypes() & IMG_PNG) {
  40                                 $t['image/png'] = 'png';
  41                         }
  42                 }
  43
  44                 return $t;
  45         }
  46
  47         public function __construct($data, $type=null) {
  48                 $this->imagick = class_exists('Imagick');
  49                 $this->types = $this->supportedTypes();
  50                 if (!array_key_exists($type, $this->types)){
  51                         $type='image/jpeg';
  52                 }
  53                 $this->type = $type;
  54
  55                 if ($this->is_imagick() && $this->load_data($data)) {
  56                         return true;
  57                 } else {
  58                         // Failed to load with Imagick, fallback
  59                         $this->imagick = false;
  60                 }
  61                 return $this->load_data($data);
  62         }
  63
  64         public function __destruct() {
  65                 if ($this->image) {
  66                         if ($this->is_imagick()) {
  67                                 $this->image->clear();
  68                                 $this->image->destroy();
  69                                 return;
  70                         }
  71                         imagedestroy($this->image);
  72                 }
  73         }
  74
  75         public function is_imagick() {
  76                 return $this->imagick;
  77         }
  78
  79         /**
  80          * @brief Maps Mime types to Imagick formats
  81          * @return arr With with image formats (mime type as key)
  82          */
  83         public function get_FormatsMap() {
  84                 $m = array(
  85                         'image/jpeg' => 'JPG',
  86                         'image/png' => 'PNG',
  87                         'image/gif' => 'GIF'
  88                 );
  89                 return $m;
  90         }
  91
  92         private function load_data($data) {
  93                 if ($this->is_imagick()) {
  94                         $this->image = new Imagick();
  95                         try {
  96                                 $this->image->readImageBlob($data);
  97                         } catch (Exception $e) {
  98                                 // Imagick couldn't use the data
  99                                 return false;
 100                         }
 101
 102                         /*
 103                          * Setup the image to the format it will be saved to
 104                          */
 105                         $map = $this->get_FormatsMap();
 106                         $format = $map[$type];
 107                         $this->image->setFormat($format);
 108
 109                         // Always coalesce, if it is not a multi-frame image it won't hurt anyway
 110                         $this->image = $this->image->coalesceImages();
 111
 112                         /*
 113                          * setup the compression here, so we'll do it only once
 114                          */
 115                         switch($this->getType()){
 116                                 case "image/png":
 117                                         $quality = get_config('system', 'png_quality');
 118                                         if ((! $quality) || ($quality > 9)) {
 119                                                 $quality = PNG_QUALITY;
 120                                         }
 121                                         /*
 122                                          * From http://www.imagemagick.org/script/command-line-options.php#quality:
 123                                          *
 124                                          * 'For the MNG and PNG image formats, the quality value sets
 125                                          * the zlib compression level (quality / 10) and filter-type (quality % 10).
 126                                          * The default PNG "quality" is 75, which means compression level 7 with adaptive PNG filtering,
 127                                          * unless the image has a color map, in which case it means compression level 7 with no PNG filtering'
 128                                          */
 129                                         $quality = $quality * 10;
 130                                         $this->image->setCompressionQuality($quality);
 131                                         break;
 132                                 case "image/jpeg":
 133                                         $quality = get_config('system', 'jpeg_quality');
 134                                         if ((! $quality) || ($quality > 100)) {
 135                                                 $quality = JPEG_QUALITY;
 136                                         }
 137                                         $this->image->setCompressionQuality($quality);
 138                         }
 139
 140                         // The 'width' and 'height' properties are only used by non-Imagick routines.
 141                         $this->width  = $this->image->getImageWidth();
 142                         $this->height = $this->image->getImageHeight();
 143                         $this->valid  = true;
 144
 145                         return true;
 146                 }
 147
 148                 $this->valid = false;
 149                 $this->image = @imagecreatefromstring($data);
 150                 if ($this->image !== false) {
 151                         $this->width  = imagesx($this->image);
 152                         $this->height = imagesy($this->image);
 153                         $this->valid  = true;
 154                         imagealphablending($this->image, false);
 155                         imagesavealpha($this->image, true);
 156
 157                         return true;
 158                 }
 159
 160                 return false;
 161         }
 162
 163         public function is_valid() {
 164                 if ($this->is_imagick()) {
 165                         return ($this->image !== false);
 166                 }
 167                 return $this->valid;
 168         }
 169
 170         public function getWidth() {
 171                 if (!$this->is_valid()) {
 172                         return false;
 173                 }
 174
 175                 if ($this->is_imagick()) {
 176                         return $this->image->getImageWidth();
 177                 }
 178                 return $this->width;
 179         }
 180
 181         public function getHeight() {
 182                 if (!$this->is_valid()) {
 183                         return false;
 184                 }
 185
 186                 if ($this->is_imagick()) {
 187                         return $this->image->getImageHeight();
 188                 }
 189                 return $this->height;
 190         }
 191
 192         public function getImage() {
 193                 if (!$this->is_valid()) {
 194                         return false;
 195                 }
 196
 197                 if ($this->is_imagick()) {
 198                         /* Clean it */
 199                         $this->image = $this->image->deconstructImages();
 200                         return $this->image;
 201                 }
 202                 return $this->image;
 203         }
 204
 205         public function getType() {
 206                 if (!$this->is_valid()) {
 207                         return false;
 208                 }
 209
 210                 return $this->type;
 211         }
 212
 213         public function getExt() {
 214                 if (!$this->is_valid()) {
 215                         return false;
 216                 }
 217
 218                 return $this->types[$this->getType()];
 219         }
 220
 221         public function scaleImage($max) {
 222                 if (!$this->is_valid()) {
 223                         return false;
 224                 }
 225
 226                 $width = $this->getWidth();
 227                 $height = $this->getHeight();
 228
 229                 $dest_width = $dest_height = 0;
 230
 231                 if ((! $width)|| (! $height)) {
 232                         return false;
 233                 }
 234
 235                 if ($width > $max && $height > $max) {
 236
 237                         // very tall image (greater than 16:9)
 238                         // constrain the width - let the height float.
 239
 240                         if ((($height * 9) / 16) > $width) {
 241                                 $dest_width = $max;
 242                                 $dest_height = intval(($height * $max) / $width);
 243                         } elseif ($width > $height) {
 244                                 // else constrain both dimensions
 245                                 $dest_width = $max;
 246                                 $dest_height = intval(($height * $max) / $width);
 247                         } else {
 248                                 $dest_width = intval(($width * $max) / $height);
 249                                 $dest_height = $max;
 250                         }
 251                 } else {
 252                         if ($width > $max) {
 253                                 $dest_width = $max;
 254                                 $dest_height = intval(($height * $max) / $width);
 255                         } else {
 256                                 if ($height > $max) {
 257
 258                                         // very tall image (greater than 16:9)
 259                                         // but width is OK - don't do anything
 260
 261                                         if ((($height * 9) / 16) > $width) {
 262                                                 $dest_width = $width;
 263                                                 $dest_height = $height;
 264                                         } else {
 265                                                 $dest_width = intval(($width * $max) / $height);
 266                                                 $dest_height = $max;
 267                                         }
 268                                 } else {
 269                                         $dest_width = $width;
 270                                         $dest_height = $height;
 271                                 }
 272                         }
 273                 }
 274
 275
 276                 if ($this->is_imagick()) {
 277                         /*
 278                          * If it is not animated, there will be only one iteration here,
 279                          * so don't bother checking
 280                          */
 281                         // Don't forget to go back to the first frame
 282                         $this->image->setFirstIterator();
 283                         do {
 284
 285                                 // FIXME - implement horizantal bias for scaling as in followin GD functions
 286                                 // to allow very tall images to be constrained only horizontally.
 287
 288                                 $this->image->scaleImage($dest_width, $dest_height);
 289                         } while ($this->image->nextImage());
 290
 291                         // These may not be necessary any more
 292                         $this->width  = $this->image->getImageWidth();
 293                         $this->height = $this->image->getImageHeight();
 294
 295                         return;
 296                 }
 297
 298
 299                 $dest = imagecreatetruecolor($dest_width, $dest_height);
 300                 imagealphablending($dest, false);
 301                 imagesavealpha($dest, true);
 302                 if ($this->type=='image/png') {
 303                         imagefill($dest, 0, 0, imagecolorallocatealpha($dest, 0, 0, 0, 127)); // fill with alpha
 304                 }
 305                 imagecopyresampled($dest, $this->image, 0, 0, 0, 0, $dest_width, $dest_height, $width, $height);
 306                 if ($this->image) {
 307                         imagedestroy($this->image);
 308                 }
 309                 $this->image = $dest;
 310                 $this->width  = imagesx($this->image);
 311                 $this->height = imagesy($this->image);
 312         }
 313
 314         public function rotate($degrees) {
 315                 if (!$this->is_valid()) {
 316                         return false;
 317                 }
 318
 319                 if ($this->is_imagick()) {
 320                         $this->image->setFirstIterator();
 321                         do {
 322                                 $this->image->rotateImage(new ImagickPixel(), -$degrees); // ImageMagick rotates in the opposite direction of imagerotate()
 323                         } while ($this->image->nextImage());
 324                         return;
 325                 }
 326
 327                 $this->image  = imagerotate($this->image,$degrees,0);
 328                 $this->width  = imagesx($this->image);
 329                 $this->height = imagesy($this->image);
 330         }
 331
 332         public function flip($horiz = true, $vert = false) {
 333                 if (!$this->is_valid()) {
 334                         return false;
 335                 }
 336
 337                 if ($this->is_imagick()) {
 338                         $this->image->setFirstIterator();
 339                         do {
 340                                 if ($horiz) {
 341                                         $this->image->flipImage();
 342                                 }
 343                                 if ($vert) {
 344                                         $this->image->flopImage();
 345                                 }
 346                         } while ($this->image->nextImage());
 347                         return;
 348                 }
 349
 350                 $w = imagesx($this->image);
 351                 $h = imagesy($this->image);
 352                 $flipped = imagecreate($w, $h);
 353                 if ($horiz) {
 354                         for ($x = 0; $x < $w; $x++) {
 355                                 imagecopy($flipped, $this->image, $x, 0, $w - $x - 1, 0, 1, $h);
 356                         }
 357                 }
 358                 if ($vert) {
 359                         for ($y = 0; $y < $h; $y++) {
 360                                 imagecopy($flipped, $this->image, 0, $y, 0, $h - $y - 1, $w, 1);
 361                         }
 362                 }
 363                 $this->image = $flipped;
 364         }
 365
 366         public function orient($filename) {
 367                 if ($this->is_imagick()) {
 368                         // based off comment on http://php.net/manual/en/imagick.getimageorientation.php
 369                         $orientation = $this->image->getImageOrientation();
 370                         switch ($orientation) {
 371                         case imagick::ORIENTATION_BOTTOMRIGHT:
 372                                 $this->image->rotateimage("#000", 180);
 373                                 break;
 374                         case imagick::ORIENTATION_RIGHTTOP:
 375                                 $this->image->rotateimage("#000", 90);
 376                                 break;
 377                         case imagick::ORIENTATION_LEFTBOTTOM:
 378                                 $this->image->rotateimage("#000", -90);
 379                                 break;
 380                         }
 381
 382                         $this->image->setImageOrientation(imagick::ORIENTATION_TOPLEFT);
 383                         return true;
 384                 }
 385                 // based off comment on http://php.net/manual/en/function.imagerotate.php
 386
 387                 if (!$this->is_valid()) {
 388                         return false;
 389                 }
 390
 391                 if ((!function_exists('exif_read_data')) || ($this->getType() !== 'image/jpeg')) {
 392                         return;
 393                 }
 394
 395                 $exif = @exif_read_data($filename,null,true);
 396                 if (!$exif) {
 397                         return;
 398                 }
 399
 400                 $ort = $exif['IFD0']['Orientation'];
 401
 402                 switch($ort)
 403                 {
 404                         case 1: // nothing
 405                                 break;
 406
 407                         case 2: // horizontal flip
 408                                 $this->flip();
 409                                 break;
 410
 411                         case 3: // 180 rotate left
 412                                 $this->rotate(180);
 413                                 break;
 414
 415                         case 4: // vertical flip
 416                                 $this->flip(false, true);
 417                                 break;
 418
 419                         case 5: // vertical flip + 90 rotate right
 420                                 $this->flip(false, true);
 421                                 $this->rotate(-90);
 422                                 break;
 423
 424                         case 6: // 90 rotate right
 425                                 $this->rotate(-90);
 426                                 break;
 427
 428                         case 7: // horizontal flip + 90 rotate right
 429                                 $this->flip();
 430                                 $this->rotate(-90);
 431                                 break;
 432
 433                         case 8: // 90 rotate left
 434                                 $this->rotate(90);
 435                                 break;
 436                 }
 437
 438                 //      logger('exif: ' . print_r($exif,true));
 439                 return $exif;
 440
 441         }
 442
 443
 444
 445         public function scaleImageUp($min) {
 446                 if (!$this->is_valid()) {
 447                         return false;
 448                 }
 449
 450
 451                 $width = $this->getWidth();
 452                 $height = $this->getHeight();
 453
 454                 $dest_width = $dest_height = 0;
 455
 456                 if ((!$width)|| (!$height)) {
 457                         return false;
 458                 }
 459
 460                 if ($width < $min && $height < $min) {
 461                         if ($width > $height) {
 462                                 $dest_width = $min;
 463                                 $dest_height = intval(($height * $min) / $width);
 464                         } else {
 465                                 $dest_width = intval(($width * $min) / $height);
 466                                 $dest_height = $min;
 467                         }
 468                 } else {
 469                         if ($width < $min) {
 470                                 $dest_width = $min;
 471                                 $dest_height = intval(($height * $min) / $width);
 472                         } else {
 473                                 if ($height < $min) {
 474                                         $dest_width = intval(($width * $min) / $height);
 475                                         $dest_height = $min;
 476                                 } else {
 477                                         $dest_width = $width;
 478                                         $dest_height = $height;
 479                                 }
 480                         }
 481                 }
 482
 483                 if ($this->is_imagick()) {
 484                         return $this->scaleImage($dest_width, $dest_height);
 485                 }
 486
 487                 $dest = imagecreatetruecolor($dest_width, $dest_height);
 488                 imagealphablending($dest, false);
 489                 imagesavealpha($dest, true);
 490                 if ($this->type=='image/png') {
 491                         imagefill($dest, 0, 0, imagecolorallocatealpha($dest, 0, 0, 0, 127)); // fill with alpha
 492                 }
 493                 imagecopyresampled($dest, $this->image, 0, 0, 0, 0, $dest_width, $dest_height, $width, $height);
 494                 if ($this->image) {
 495                         imagedestroy($this->image);
 496                 }
 497                 $this->image = $dest;
 498                 $this->width  = imagesx($this->image);
 499                 $this->height = imagesy($this->image);
 500         }
 501
 502
 503
 504         public function scaleImageSquare($dim) {
 505                 if (!$this->is_valid()) {
 506                         return false;
 507                 }
 508
 509                 if ($this->is_imagick()) {
 510                         $this->image->setFirstIterator();
 511                         do {
 512                                 $this->image->scaleImage($dim, $dim);
 513                         } while ($this->image->nextImage());
 514                         return;
 515                 }
 516
 517                 $dest = imagecreatetruecolor($dim, $dim);
 518                 imagealphablending($dest, false);
 519                 imagesavealpha($dest, true);
 520                 if ($this->type=='image/png') {
 521                         imagefill($dest, 0, 0, imagecolorallocatealpha($dest, 0, 0, 0, 127)); // fill with alpha
 522                 }
 523                 imagecopyresampled($dest, $this->image, 0, 0, 0, 0, $dim, $dim, $this->width, $this->height);
 524                 if ($this->image) {
 525                         imagedestroy($this->image);
 526                 }
 527                 $this->image = $dest;
 528                 $this->width  = imagesx($this->image);
 529                 $this->height = imagesy($this->image);
 530         }
 531
 532
 533         public function cropImage($max, $x, $y, $w, $h) {
 534                 if (!$this->is_valid()) {
 535                         return false;
 536                 }
 537
 538                 if ($this->is_imagick()) {
 539                         $this->image->setFirstIterator();
 540                         do {
 541                                 $this->image->cropImage($w, $h, $x, $y);
 542                                 /*
 543                                  * We need to remove the canva,
 544                                  * or the image is not resized to the crop:
 545                                  * http://php.net/manual/en/imagick.cropimage.php#97232
 546                                  */
 547                                 $this->image->setImagePage(0, 0, 0, 0);
 548                         } while ($this->image->nextImage());
 549                         return $this->scaleImage($max);
 550                 }
 551
 552                 $dest = imagecreatetruecolor($max, $max);
 553                 imagealphablending($dest, false);
 554                 imagesavealpha($dest, true);
 555                 if ($this->type=='image/png') {
 556                         imagefill($dest, 0, 0, imagecolorallocatealpha($dest, 0, 0, 0, 127)); // fill with alpha
 557                 }
 558                 imagecopyresampled($dest, $this->image, 0, 0, $x, $y, $max, $max, $w, $h);
 559                 if ($this->image) {
 560                         imagedestroy($this->image);
 561                 }
 562                 $this->image = $dest;
 563                 $this->width  = imagesx($this->image);
 564                 $this->height = imagesy($this->image);
 565         }
 566
 567         public function saveImage($path) {
 568                 if (!$this->is_valid()) {
 569                         return false;
 570                 }
 571
 572                 $string = $this->imageString();
 573
 574                 $a = get_app();
 575
 576                 $stamp1 = microtime(true);
 577                 file_put_contents($path, $string);
 578                 $a->save_timestamp($stamp1, "file");
 579         }
 580
 581         public function imageString() {
 582                 if (!$this->is_valid()) {
 583                         return false;
 584                 }
 585
 586                 if ($this->is_imagick()) {
 587                         /* Clean it */
 588                         $this->image = $this->image->deconstructImages();
 589                         $string = $this->image->getImagesBlob();
 590                         return $string;
 591                 }
 592
 593                 $quality = false;
 594
 595                 ob_start();
 596
 597                 // Enable interlacing
 598                 imageinterlace($this->image, true);
 599
 600                 switch($this->getType()){
 601                         case "image/png":
 602                                 $quality = get_config('system', 'png_quality');
 603                                 if ((!$quality) || ($quality > 9)) {
 604                                         $quality = PNG_QUALITY;
 605                                 }
 606                                 imagepng($this->image, null, $quality);
 607                                 break;
 608                         case "image/jpeg":
 609                                 $quality = get_config('system', 'jpeg_quality');
 610                                 if ((!$quality) || ($quality > 100)) {
 611                                         $quality = JPEG_QUALITY;
 612                                 }
 613                                 imagejpeg($this->image, null, $quality);
 614                 }
 615                 $string = ob_get_contents();
 616                 ob_end_clean();
 617
 618                 return $string;
 619         }
 620
 621
 622
 623         public function store($uid, $cid, $rid, $filename, $album, $scale, $profile = 0, $allow_cid = '', $allow_gid = '', $deny_cid = '', $deny_gid = '') {
 624
 625                 $r = q("SELECT `guid` FROM `photo` WHERE `resource-id` = '%s' AND `guid` != '' LIMIT 1",
 626                         dbesc($rid)
 627                 );
 628                 if (dbm::is_result($r)) {
 629                         $guid = $r[0]['guid'];
 630                 } else {
 631                         $guid = get_guid();
 632                 }
 633
 634                 $x = q("SELECT `id` FROM `photo` WHERE `resource-id` = '%s' AND `uid` = %d AND `contact-id` = %d AND `scale` = %d LIMIT 1",
 635                         dbesc($rid),
 636                         intval($uid),
 637                         intval($cid),
 638                         intval($scale)
 639                 );
 640                 if (dbm::is_result($x)) {
 641                         $r = q("UPDATE `photo`
 642                                 SET `uid` = %d,
 643                                 `contact-id` = %d,
 644                                 `guid` = '%s',
 645                                 `resource-id` = '%s',
 646                                 `created` = '%s',
 647                                 `edited` = '%s',
 648                                 `filename` = '%s',
 649                                 `type` = '%s',
 650                                 `album` = '%s',
 651                                 `height` = %d,
 652                                 `width` = %d,
 653                                 `datasize` = %d,
 654                                 `data` = '%s',
 655                                 `scale` = %d,
 656                                 `profile` = %d,
 657                                 `allow_cid` = '%s',
 658                                 `allow_gid` = '%s',
 659                                 `deny_cid` = '%s',
 660                                 `deny_gid` = '%s'
 661                                 WHERE `id` = %d",
 662
 663                                 intval($uid),
 664                                 intval($cid),
 665                                 dbesc($guid),
 666                                 dbesc($rid),
 667                                 dbesc(datetime_convert()),
 668                                 dbesc(datetime_convert()),
 669                                 dbesc(basename($filename)),
 670                                 dbesc($this->getType()),
 671                                 dbesc($album),
 672                                 intval($this->getHeight()),
 673                                 intval($this->getWidth()),
 674                                 dbesc(strlen($this->imageString())),
 675                                 dbesc($this->imageString()),
 676                                 intval($scale),
 677                                 intval($profile),
 678                                 dbesc($allow_cid),
 679                                 dbesc($allow_gid),
 680                                 dbesc($deny_cid),
 681                                 dbesc($deny_gid),
 682                                 intval($x[0]['id'])
 683                         );
 684                 } else {
 685                         $r = q("INSERT INTO `photo`
 686                                 (`uid`, `contact-id`, `guid`, `resource-id`, `created`, `edited`, `filename`, type, `album`, `height`, `width`, `datasize`, `data`, `scale`, `profile`, `allow_cid`, `allow_gid`, `deny_cid`, `deny_gid`)
 687                                 VALUES (%d, %d, '%s', '%s', '%s', '%s', '%s', '%s', '%s', %d, %d, %d, '%s', %d, %d, '%s', '%s', '%s', '%s')",
 688                                 intval($uid),
 689                                 intval($cid),
 690                                 dbesc($guid),
 691                                 dbesc($rid),
 692                                 dbesc(datetime_convert()),
 693                                 dbesc(datetime_convert()),
 694                                 dbesc(basename($filename)),
 695                                 dbesc($this->getType()),
 696                                 dbesc($album),
 697                                 intval($this->getHeight()),
 698                                 intval($this->getWidth()),
 699                                 dbesc(strlen($this->imageString())),
 700                                 dbesc($this->imageString()),
 701                                 intval($scale),
 702                                 intval($profile),
 703                                 dbesc($allow_cid),
 704                                 dbesc($allow_gid),
 705                                 dbesc($deny_cid),
 706                                 dbesc($deny_gid)
 707                         );
 708                 }
 709
 710                 // Update the cached values
 711                 if ($album != 'Contact Photos') {
 712                         photo_albums($uid, true);
 713                 }
 714
 715                 return $r;
 716         }
 717 }
 718
 719
 720 /**
 721  * Guess image mimetype from filename or from Content-Type header
 722  *
 723  * @arg $filename string Image filename
 724  * @arg $fromcurl boolean Check Content-Type header from curl request
 725  */
 726 function guess_image_type($filename, $fromcurl=false) {
 727         logger('Photo: guess_image_type: '.$filename . ($fromcurl?' from curl headers':''), LOGGER_DEBUG);
 728         $type = null;
 729         if ($fromcurl) {
 730                 $a = get_app();
 731                 $headers=array();
 732                 $h = explode("\n",$a->get_curl_headers());
 733                 foreach ($h as $l) {
 734                         list($k,$v) = array_map("trim", explode(":", trim($l), 2));
 735                         $headers[$k] = $v;
 736                 }
 737                 if (array_key_exists('Content-Type', $headers))
 738                         $type = $headers['Content-Type'];
 739         }
 740         if (is_null($type)){
 741                 // Guessing from extension? Isn't that... dangerous?
 742                 if (class_exists('Imagick') && file_exists($filename) && is_readable($filename)) {
 743                         /**
 744                          * Well, this not much better,
 745                          * but at least it comes from the data inside the image,
 746                          * we won't be tricked by a manipulated extension
 747                          */
 748                         $image = new Imagick($filename);
 749                         $type = $image->getImageMimeType();
 750                         $image->setInterlaceScheme(Imagick::INTERLACE_PLANE);
 751                 } else {
 752                         $ext = pathinfo($filename, PATHINFO_EXTENSION);
 753                         $types = Photo::supportedTypes();
 754                         $type = "image/jpeg";
 755                         foreach ($types as $m => $e){
 756                                 if ($ext == $e) {
 757                                         $type = $m;
 758                                 }
 759                         }
 760                 }
 761         }
 762         logger('Photo: guess_image_type: type='.$type, LOGGER_DEBUG);
 763         return $type;
 764
 765 }
 766
 767 /**
 768  * @brief Updates the avatar links in a contact only if needed
 769  *
 770  * @param string $avatar Link to avatar picture
 771  * @param int $uid User id of contact owner
 772  * @param int $cid Contact id
 773  * @param bool $force force picture update
 774  *
 775  * @return array Returns array of the different avatar sizes
 776  */
 777 function update_contact_avatar($avatar, $uid, $cid, $force = false) {
 778
 779         $r = q("SELECT `avatar`, `photo`, `thumb`, `micro` FROM `contact` WHERE `id` = %d LIMIT 1", intval($cid));
 780         if (!dbm::is_result($r)) {
 781                 return false;
 782         } else {
 783                 $data = array($r[0]["photo"], $r[0]["thumb"], $r[0]["micro"]);
 784         }
 785
 786         if (($r[0]["avatar"] != $avatar) OR $force) {
 787                 $photos = import_profile_photo($avatar, $uid, $cid, true);
 788
 789                 if ($photos) {
 790                         q("UPDATE `contact` SET `avatar` = '%s', `photo` = '%s', `thumb` = '%s', `micro` = '%s', `avatar-date` = '%s' WHERE `id` = %d",
 791                                 dbesc($avatar), dbesc($photos[0]), dbesc($photos[1]), dbesc($photos[2]),
 792                                 dbesc(datetime_convert()), intval($cid));
 793                         return $photos;
 794                 }
 795         }
 796
 797         return $data;
 798 }
 799
 800 function import_profile_photo($photo, $uid, $cid, $quit_on_error = false) {
 801
 802         $a = get_app();
 803
 804         $r = q("SELECT `resource-id` FROM `photo` WHERE `uid` = %d AND `contact-id` = %d AND `scale` = 4 AND `album` = 'Contact Photos' LIMIT 1",
 805                 intval($uid),
 806                 intval($cid)
 807         );
 808         if (dbm::is_result($r) && strlen($r[0]['resource-id'])) {
 809                 $hash = $r[0]['resource-id'];
 810         } else {
 811                 $hash = photo_new_resource();
 812         }
 813
 814         $photo_failure = false;
 815
 816         $filename = basename($photo);
 817         $img_str = fetch_url($photo, true);
 818
 819         if ($quit_on_error AND ($img_str == "")) {
 820                 return false;
 821         }
 822
 823         $type = guess_image_type($photo, true);
 824         $img = new Photo($img_str, $type);
 825         if ($img->is_valid()) {
 826
 827                 $img->scaleImageSquare(175);
 828
 829                 $r = $img->store($uid, $cid, $hash, $filename, 'Contact Photos', 4);
 830
 831                 if ($r === false)
 832                         $photo_failure = true;
 833
 834                 $img->scaleImage(80);
 835
 836                 $r = $img->store($uid, $cid, $hash, $filename, 'Contact Photos', 5);
 837
 838                 if ($r === false)
 839                         $photo_failure = true;
 840
 841                 $img->scaleImage(48);
 842
 843                 $r = $img->store($uid, $cid, $hash, $filename, 'Contact Photos', 6);
 844
 845                 if ($r === false) {
 846                         $photo_failure = true;
 847                 }
 848
 849                 $photo = $a->get_baseurl() . '/photo/' . $hash . '-4.' . $img->getExt();
 850                 $thumb = $a->get_baseurl() . '/photo/' . $hash . '-5.' . $img->getExt();
 851                 $micro = $a->get_baseurl() . '/photo/' . $hash . '-6.' . $img->getExt();
 852         } else {
 853                 $photo_failure = true;
 854         }
 855
 856         if ($photo_failure AND $quit_on_error) {
 857                 return false;
 858         }
 859
 860         if ($photo_failure) {
 861                 $photo = $a->get_baseurl() . '/images/person-175.jpg';
 862                 $thumb = $a->get_baseurl() . '/images/person-80.jpg';
 863                 $micro = $a->get_baseurl() . '/images/person-48.jpg';
 864         }
 865
 866         return(array($photo,$thumb,$micro));
 867
 868 }
 869
 870 function get_photo_info($url) {
 871         $data = array();
 872
 873         $data = Cache::get($url);
 874
 875         if (is_null($data) OR !$data) {
 876                 $img_str = fetch_url($url, true, $redirects, 4);
 877                 $filesize = strlen($img_str);
 878
 879                 if (function_exists("getimagesizefromstring")) {
 880                         $data = getimagesizefromstring($img_str);
 881                 } else {
 882                         $tempfile = tempnam(get_temppath(), "cache");
 883
 884                         $a = get_app();
 885                         $stamp1 = microtime(true);
 886                         file_put_contents($tempfile, $img_str);
 887                         $a->save_timestamp($stamp1, "file");
 888
 889                         $data = getimagesize($tempfile);
 890                         unlink($tempfile);
 891                 }
 892
 893                 if ($data) {
 894                         $data["size"] = $filesize;
 895                 }
 896
 897                 Cache::set($url, $data);
 898         }
 899
 900         return $data;
 901 }
 902
 903 function scale_image($width, $height, $max) {
 904
 905         $dest_width = $dest_height = 0;
 906
 907         if ((!$width) || (!$height)) {
 908                 return false;
 909         }
 910
 911         if ($width > $max && $height > $max) {
 912
 913                 // very tall image (greater than 16:9)
 914                 // constrain the width - let the height float.
 915
 916                 if ((($height * 9) / 16) > $width) {
 917                         $dest_width = $max;
 918                         $dest_height = intval(($height * $max) / $width);
 919                 } elseif ($width > $height) {
 920                         // else constrain both dimensions
 921                         $dest_width = $max;
 922                         $dest_height = intval(($height * $max) / $width);
 923                 } else {
 924                         $dest_width = intval(($width * $max) / $height);
 925                         $dest_height = $max;
 926                 }
 927         } else {
 928                 if ($width > $max) {
 929                         $dest_width = $max;
 930                         $dest_height = intval(($height * $max) / $width);
 931                 } else {
 932                         if ($height > $max) {
 933
 934                                 // very tall image (greater than 16:9)
 935                                 // but width is OK - don't do anything
 936
 937                                 if ((($height * 9) / 16) > $width) {
 938                                         $dest_width = $width;
 939                                         $dest_height = $height;
 940                                 } else {
 941                                         $dest_width = intval(($width * $max) / $height);
 942                                         $dest_height = $max;
 943                                 }
 944                         } else {
 945                                 $dest_width = $width;
 946                                 $dest_height = $height;
 947                         }
 948                 }
 949         }
 950         return array("width" => $dest_width, "height" => $dest_height);
 951 }
 952
 953 function store_photo($a, $uid, $imagedata = "", $url = "") {
 954         $r = q("SELECT `user`.`nickname`, `user`.`page-flags`, `contact`.`id` FROM `user` INNER JOIN `contact` on `user`.`uid` = `contact`.`uid`
 955                 WHERE `user`.`uid` = %d AND `user`.`blocked` = 0 AND `contact`.`self` = 1 LIMIT 1",
 956                 intval($uid));
 957
 958         if (!dbm::is_result($r)) {
 959                 logger("Can't detect user data for uid ".$uid, LOGGER_DEBUG);
 960                 return(array());
 961         }
 962
 963         $page_owner_nick  = $r[0]['nickname'];
 964
 965         /// @TODO
 966         /// $default_cid      = $r[0]['id'];
 967         /// $community_page   = (($r[0]['page-flags'] == PAGE_COMMUNITY) ? true : false);
 968
 969         if ((strlen($imagedata) == 0) AND ($url == "")) {
 970                 logger("No image data and no url provided", LOGGER_DEBUG);
 971                 return(array());
 972         } elseif (strlen($imagedata) == 0) {
 973                 logger("Uploading picture from ".$url, LOGGER_DEBUG);
 974
 975                 $stamp1 = microtime(true);
 976                 $imagedata = @file_get_contents($url);
 977                 $a->save_timestamp($stamp1, "file");
 978         }
 979
 980         $maximagesize = get_config('system', 'maximagesize');
 981
 982         if (($maximagesize) && (strlen($imagedata) > $maximagesize)) {
 983                 logger("Image exceeds size limit of ".$maximagesize, LOGGER_DEBUG);
 984                 return(array());
 985         }
 986
 987 /*
 988         $r = q("select sum(octet_length(data)) as total from photo where uid = %d and scale = 0 and album != 'Contact Photos' ",
 989                 intval($uid)
 990         );
 991
 992         $limit = service_class_fetch($uid,'photo_upload_limit');
 993
 994         if (($limit !== false) && (($r[0]['total'] + strlen($imagedata)) > $limit)) {
 995                 logger("Image exceeds personal limit of uid ".$uid, LOGGER_DEBUG);
 996                 return(array());
 997         }
 998 */
 999
1000         $tempfile = tempnam(get_temppath(), "cache");
1001
1002         $stamp1 = microtime(true);
1003         file_put_contents($tempfile, $imagedata);
1004         $a->save_timestamp($stamp1, "file");
1005
1006         $data = getimagesize($tempfile);
1007
1008         if (!isset($data["mime"])) {
1009                 unlink($tempfile);
1010                 logger("File is no picture", LOGGER_DEBUG);
1011                 return(array());
1012         }
1013
1014         $ph = new Photo($imagedata, $data["mime"]);
1015
1016         if (!$ph->is_valid()) {
1017                 unlink($tempfile);
1018                 logger("Picture is no valid picture", LOGGER_DEBUG);
1019                 return(array());
1020         }
1021
1022         $ph->orient($tempfile);
1023         unlink($tempfile);
1024
1025         $max_length = get_config('system', 'max_image_length');
1026         if (! $max_length) {
1027                 $max_length = MAX_IMAGE_LENGTH;
1028         }
1029         if ($max_length > 0) {
1030                 $ph->scaleImage($max_length);
1031         }
1032
1033         $width = $ph->getWidth();
1034         $height = $ph->getHeight();
1035
1036         $hash = photo_new_resource();
1037
1038         $smallest = 0;
1039
1040         // Pictures are always public by now
1041         //$defperm = '<'.$default_cid.'>';
1042         $defperm = "";
1043         $visitor = 0;
1044
1045         $r = $ph->store($uid, $visitor, $hash, $tempfile, t('Wall Photos'), 0, 0, $defperm);
1046
1047         if (!$r) {
1048                 logger("Picture couldn't be stored", LOGGER_DEBUG);
1049                 return(array());
1050         }
1051
1052         $image = array("page" => $a->get_baseurl().'/photos/'.$page_owner_nick.'/image/'.$hash,
1053                         "full" => $a->get_baseurl()."/photo/{$hash}-0.".$ph->getExt());
1054
1055         if ($width > 800 || $height > 800) {
1056                 $image["large"] = $a->get_baseurl()."/photo/{$hash}-0.".$ph->getExt();
1057         }
1058
1059         if ($width > 640 || $height > 640) {
1060                 $ph->scaleImage(640);
1061                 $r = $ph->store($uid, $visitor, $hash, $tempfile, t('Wall Photos'), 1, 0, $defperm);
1062                 if ($r) {
1063                         $image["medium"] = $a->get_baseurl()."/photo/{$hash}-1.".$ph->getExt();
1064                 }
1065         }
1066
1067         if ($width > 320 || $height > 320) {
1068                 $ph->scaleImage(320);
1069                 $r = $ph->store($uid, $visitor, $hash, $tempfile, t('Wall Photos'), 2, 0, $defperm);
1070                 if ($r) {
1071                         $image["small"] = $a->get_baseurl()."/photo/{$hash}-2.".$ph->getExt();
1072                 }
1073         }
1074
1075         if ($width > 160 AND $height > 160) {
1076                 $x = 0;
1077                 $y = 0;
1078
1079                 $min = $ph->getWidth();
1080                 if ($min > 160) {
1081                         $x = ($min - 160) / 2;
1082                 }
1083
1084                 if ($ph->getHeight() < $min) {
1085                         $min = $ph->getHeight();
1086                         if ($min > 160) {
1087                                 $y = ($min - 160) / 2;
1088                         }
1089                 }
1090
1091                 $min = 160;
1092                 $ph->cropImage(160, $x, $y, $min, $min);
1093
1094                 $r = $ph->store($uid, $visitor, $hash, $tempfile, t('Wall Photos'), 3, 0, $defperm);
1095                 if ($r) {
1096                         $image["thumb"] = $a->get_baseurl()."/photo/{$hash}-3.".$ph->getExt();
1097                 }
1098         }
1099
1100         // Set the full image as preview image. This will be overwritten, if the picture is larger than 640.
1101         $image["preview"] = $image["full"];
1102
1103         // Deactivated, since that would result in a cropped preview, if the picture wasn't larger than 320
1104         //if (isset($image["thumb"]))
1105         //      $image["preview"] = $image["thumb"];
1106
1107         // Unsure, if this should be activated or deactivated
1108         //if (isset($image["small"]))
1109         //      $image["preview"] = $image["small"];
1110
1111         if (isset($image["medium"])) {
1112                 $image["preview"] = $image["medium"];
1113         }
1114
1115         return($image);
1116 }